/****** More of My Resets *******/
*,
*::before,
*::after {
  box-sizing: border-box;
}

button {
  font-family: inherit;
  font-size: inherit;
  background-color: transparent;
  color: inherit;
  border-width: 0;
  padding: 0;
  margin: 0;
  cursor: pointer;
  text-align: inherit;
}

a {
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}

img {
  display: block;
  max-width: 100%;
}

/* Responsive Variables */
@media (min-width: 1101px) {
  .u-only-small {
    display: none !important;
  }
}

@media (max-width: 700px),
  (min-width: 701px) and (max-width: 900px),
  (min-width: 901px) and (max-width: 1100px) {
  .u-only-wide {
    display: none !important;
  }
}

/* Native CSS variables */
:root {
  /* colors */
  --main-color: #1877f2;
  --text-color: #050505;
  --full-color: 255 255 255;
  --empty-color: 0 0 0;
  /* white default*/
  --abalance1: rgba(var(--full-color) / 1);
  --abalance80: rgba(var(--full-color) / 0.8);
  /* black default*/
  --balance1: rgb(var(--empty-color) / 0.05);
  --balance2: rgb(var(--empty-color) / 0.1);
  --balance3: rgb(var(--empty-color) / 0.15);
  --balance4: rgb(var(--empty-color) / 0.2);
  --balance8: rgb(var(--empty-color) / 0.6);
  --balance10: rgb(var(--empty-color) / 0.8);
  --balance-full: #f0f2f5;
  /* sizes */
  --height-header: 40px;
  /* common sizes */
  --size1: 4px;
  --size2: calc(var(--size1) * 2);
  --size3: calc(var(--size1) * 3);
  --size4: calc(var(--size1) * 4);
}

/* utilities classes (always with !important)*/
.u-flex {
  display: flex !important;
}

.u-hide {
  display: none !important;
}

.u-margin-inline-start {
  margin-inline-start: auto !important;
}

/* animation */
@keyframes clickableAnimation {
  0% {
    transform: scale(1);
  }
  95% {
    transform: scale(1);
  }
  96% {
    transform: scale(1.5) rotate(-30deg);
  }
  97% {
    transform: scale(1.5) rotate(30deg);
  }
  100% {
    transform: scale(1);
  }
}
.u-animation-click {
  animation: clickableAnimation 10s ease-in-out -7s infinite;
}

/* icons */
.icon-arrow-block-end {
  width: 0;
  height: 0;
  border: solid 0 transparent;
  border-width: 5px 7px;
  border-inline-start-color: var(--balance10);
  margin: auto 0;
}

.icon-privacy {
  filter: grayscale(1) opacity(0.8);
}

.icon-menu {
  text-align: center;
}
.icon-menu::before {
  content: "";
  display: inline-block;
  vertical-align: middle;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background-color: var(--balance10);
  box-shadow: -6px 0px var(--balance10), 6px 0px var(--balance10);
}

.icon-hamburger {
  width: 20px;
  height: 3px;
  background-color: var(--balance10);
  box-shadow: 0px 10px, 0px -10px;
}

.icon-search {
  filter: grayscale(1) opacity(0.8);
  transition: 0.3s;
}

/*mixin*/
/*scrolls*/
::-webkit-scrollbar {
  width: 6px !important;
  height: 6px !important;
}

::-webkit-scrollbar-thumb {
  background-color: rgba(0, 0, 0, 0);
}

:hover::-webkit-scrollbar-thumb {
  background-color: rgba(0, 0, 0, 0.2);
}

::-webkit-scrollbar-track {
  background-color: rgba(255, 255, 255, 0);
}

/* typography */
html {
  font-size: 1px;
  /*for using REM units*/
}

body {
  font-family: Arial;
  font-size: 15rem;
  line-height: 1.3;
  color: var(--text-color);
  background-color: var(--balance-full);
  overflow-x: hidden;
}

@media (max-width: 700px),
  (min-width: 701px) and (max-width: 900px),
  (min-width: 901px) and (max-width: 1100px) {
  .is-nav-open body {
    overflow: hidden;
  }
}

/* Grid Layout */
.common-structure {
  display: grid;
}
.common-structure > *:not(.main-header):not(.user-nav) {
  padding: var(--size4) var(--size2);
}
@media (max-width: 700px) {
  .common-structure {
    grid-template-areas: "header" "main";
    grid-template-columns: 100%;
  }
  .common-structure .end {
    display: none;
  }
}
@media (min-width: 701px) and (max-width: 900px) {
  .common-structure {
    grid-template-areas: "header header" "main main";
    grid-template-columns: 1fr 1fr;
  }
  .common-structure .side-a,
  .common-structure .side-b {
    display: none;
  }
}
@media (max-width: 700px), (min-width: 701px) and (max-width: 900px) {
  .common-structure .side-a,
  .common-structure .side-b {
    display: none;
  }
}
@media (min-width: 901px) {
  .common-structure {
    justify-content: space-between;
  }
}
@media (min-width: 901px) and (max-width: 1100px) {
  .common-structure {
    grid-template-areas: "header header" "main side-b";
    grid-template-columns: minmax(300px, 1fr) auto;
  }
  .common-structure .side-a {
    display: none;
  }
}
@media (min-width: 1101px) {
  .common-structure {
    grid-template-areas: "header header header" "side-a main side-b";
    grid-template-columns: auto minmax(300px, 680px) auto;
  }
}

.main-header {
  grid-area: header;
}

.side-a {
  grid-area: side-a;
}

.main-feed {
  grid-area: main;
}

.side-b {
  grid-area: side-b;
}

.side-a,
.side-b {
  width: 320px;
  overflow-y: auto;
  scrollbar-width: thin;
  position: sticky;
  top: 60px;
  max-height: calc(100vh - 60px);
  overflow: auto;
}

@media (max-width: 700px),
  (min-width: 701px) and (max-width: 900px),
  (min-width: 901px) and (max-width: 1100px) {
  .side-a {
    position: fixed;
    z-index: 1;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--balance-full);
    width: auto;
  }
  .side-a.is-open {
    display: block;
  }
}

.side-b {
  margin-inline-start: auto;
  align-self: start;
}

@media (max-width: 700px) {
  .main-feed {
    margin-bottom: 40px;
  }
}

/* elements */
.section-title {
  color: var(--balance8);
  font-size: 16rem;
  font-weight: bold;
  padding: var(--size1) var(--size3);
  padding-block-start: 24px;
}

.logo {
  display: block;
  flex-shrink: 0;
  width: var(--height-header);
  height: var(--height-header);
  border-radius: 50%;
  color: white;
  text-align: center;
  font-size: var(--height-header);
  font-weight: bold;
  background-image: linear-gradient(#19aeff, #0164e1);
}

.search-box {
  width: 100%;
  padding: var(--size3);
  padding-inline-start: 40px;
  border-width: 0;
  background-color: var(--balance1);
  border-radius: calc(var(--height-header) / 2);
  transition: 0.3s;
  -webkit-appearance: textfield;
}
.search-box:focus {
  outline: none;
  background-color: var(--balance2);
}
.search-box:focus + .icon-search {
  filter: grayscale(0.2) opacity(0.95);
}
.search-box-wrapper {
  position: relative;
  flex: 1;
}
.search-box-wrapper .icon-search {
  position: absolute;
  top: 10px;
  left: 12px;
}

.icon-button {
  display: flex;
  width: var(--height-header);
  height: var(--height-header);
  border-radius: 50%;
  background-color: var(--balance2);
}
.icon-button .icon {
  margin: auto;
}
.icon-button:hover,
.icon-button:focus {
  background-color: var(--balance3);
}

.icon-button-2 {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  text-align: center;
}
.icon-button-2 .icon-menu::before {
  vertical-align: 3px;
}
.icon-button-2:hover,
.icon-button-2:focus {
  background-color: var(--balance1);
}

.common-more {
  background-color: var(--balance1);
  border-radius: var(--size2);
  height: 36px;
  width: calc(100% - var(--size4));
  margin: var(--size2);
  text-align: center;
}
.common-more .text {
  font-weight: bold;
}
.common-more .icon {
  font-size: 12rem;
  filter: grayscale(100%);
  opacity: 0.8;
}
.common-more:hover,
.common-more:focus {
  background-color: var(--balance2);
}

.user {
  display: flex;
  padding: var(--size1);
  margin: auto 0;
  border-radius: calc(var(--height-header) / 2);
}
.user:hover,
.user:focus {
  background-color: var(--balance1);
}
.user-image {
  border-radius: 50%;
  margin-inline-end: var(--size2);
}
.user-name {
  margin: auto 0;
  font-weight: bold;
  padding-inline-end: var(--size1);
}
.user-nav {
  padding: 10px 16px;
}
.user-nav .icon {
  filter: grayscale(100%);
}
.user-nav-list {
  justify-content: flex-end;
}
.user-nav-item {
  display: flex;
  margin-inline-end: var(--size2);
}
@media (max-width: 700px) {
  .user-nav {
    position: fixed;
    z-index: 2;
    left: 0;
    right: 0;
    bottom: 0;
    /*top:calc(100vh - 60px);*/
    width: 100%;
    background-color: var(--abalance1);
    box-shadow: 2px 1px 5px 2px var(--balance4);
  }
  .user-nav-list {
    justify-content: space-between;
  }
}
@media (min-width: 701px) {
  .user-nav {
    position: sticky;
    top: 0;
    z-index: 3;
    grid-column: 3;
    grid-row: 1;
  }
}
@media (min-width: 701px) and (max-width: 900px),
  (min-width: 901px) and (max-width: 1100px) {
  .user-nav {
    grid-column: 2;
  }
}

.alt-text {
  position: relative;
}
.alt-text:hover::before,
.alt-text:focus::before {
  content: attr(aria-label);
  display: block;
  padding: var(--size2);
  border-radius: var(--size1);
  position: absolute;
  top: calc(100% + var(--size2));
  left: 50%;
  transform: translatex(-50%);
  color: var(--abalance80);
  background-color: var(--balance10);
}

/* compnenets */
.main-header {
  position: sticky;
  z-index: 2;
  top: 0;
  background-color: var(--abalance1);
  box-shadow: -2px -1px 5px 2px var(--balance4);
}
.main-header .start,
.main-header .end {
  width: 320px;
  padding: 10px 16px;
}
.main-header .start {
  padding: 10px 16px;
}
.main-header .main-nav {
  flex: 1;
  max-width: 680px;
  margin: 0 auto;
}
.main-header .logo {
  margin-inline-end: var(--size2);
}
@media (max-width: 700px) {
  .main-header .main-nav {
    flex: 0;
    margin: 0;
    margin-inline-start: auto;
  }
  .main-header .user-nav {
    width: 100%;
    box-shadow: -2px -1px 5px 2px var(--balance4);
  }
  .main-header .user-nav-list {
    justify-content: space-between;
  }
}

.main-nav-list {
  height: 100%;
}
.main-nav-button {
  display: flex;
  height: 100%;
  text-align: center;
  padding: 0 var(--size4);
  border: solid 3px transparent;
  border-radius: var(--size2);
  background-clip: padding-box;
  transition: background 0.3s;
}
.main-nav-button .icon {
  margin: auto;
  filter: grayscale(100%);
  opacity: 0.8;
  font-size: 22px;
}
.main-nav-button:hover,
.main-nav-button:focus {
  outline: 0;
}
.main-nav-button:hover:not(.is-selected),
.main-nav-button:focus:not(.is-selected) {
  background-color: var(--balance1);
}
.main-nav-button.is-selected {
  border-bottom-color: var(--main-color);
  border-radius: 0;
}
.main-nav-button.is-selected .icon {
  opacity: 1;
  filter: grayscale(0%);
}
@media (min-width: 1101px) {
  .main-nav-item {
    flex: 1;
  }
}

.common-section {
  color: var(--balance10);
}
.common-section:not(:first-child)::before {
  content: "";
  display: block;
  margin: var(--size1) var(--size2);
  border-top: solid 1px var(--balance4);
}

.common-list-button {
  display: flex;
  height: 52px;
  padding: var(--size2);
}
.common-list-button > * {
  margin: auto 0;
}
.common-list-button img {
  border-radius: var(--size2);
}
.common-list-button .user-image {
  border-radius: 50%;
}
.common-list-button .icon {
  width: 36px;
  font-size: 24px;
  text-align: center;
  margin-top: auto;
  margin-bottom: auto;
  margin-inline-end: var(--size2);
}
.common-list-button .text {
  font-weight: bold;
}
.common-list-button:hover,
.common-list-button:focus {
  background-color: var(--balance1);
  border-radius: var(--size2);
}
.common-list-button.is-ads {
  height: auto;
}
.common-list-button.is-ads .image {
  width: 115px;
  flex-shrink: 0;
  margin-inline-end: var(--size3);
}
.common-list-button.is-ads .ads-url {
  font-weight: normal;
}

/* post parts */
.common-post {
  padding: var(--size3) var(--size4);
  padding-block-end: var(--size1);
  margin-block-end: var(--size4);
  background-color: var(--abalance1);
  border-radius: var(--size2);
  box-shadow: 0 1px 2px var(--balance4);
}
.common-post-header {
  margin-bottom: var(--size2);
}

.user-and-group {
  font-weight: bold;
}
.user-and-group .icon-arrow-block-end {
  margin-inline-start: var(--size2);
}

.time-and-privacy {
  font-size: 13rem;
}
.time-and-privacy > *:not(:first-child)::before {
  content: "";
  vertical-align: bottom;
  display: inline-block;
  width: 2px;
  height: 2px;
  background-color: var(--balance10);
  margin: var(--size2);
}

.summary > * + * {
  margin-inline-start: var(--size1);
}

.total-comments a:hover,
.total-comments a:focus {
  text-decoration: underline;
}

.reactions {
  letter-spacing: -2px;
}

.common-content b {
  font-weight: bold;
}
.common-content p {
  margin-bottom: var(--size1);
}
.common-content a:not(.embed-content) {
  color: var(--main-color);
}
.common-content a:not(.embed-content):hover,
.common-content a:not(.embed-content):focus {
  text-decoration: underline;
}
.common-content img:not(.embed-content-image) {
  display: block;
  width: calc(100% + 32px);
  margin: 16px -16px;
  max-width: none;
}

.embed-content {
  display: block;
  background-color: var(--balance1);
  margin: 16px -16px;
}
.embed-content-text {
  padding: var(--size3) var(--size4);
}
.embed-content-info {
  text-transform: uppercase;
  color: var(--balance8);
  font-size: 13rem;
  margin-bottom: var(--size1);
}
.embed-content-title {
  font-weight: bold;
}
.embed-content-paragraph {
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
  display: block;
  color: var(--balance8);
}
.embed-content-image {
  width: 100%;
}

.actions-buttons {
  padding-top: var(--size1);
  margin-top: var(--size2);
  border-top: solid 1px var(--balance4);
}
.actions-buttons-item {
  flex: 1;
}
.actions-buttons-button {
  width: 100%;
  text-align: center;
  height: 32px;
  border-radius: var(--size1);
}
.actions-buttons-button:hover,
.actions-buttons-button:focus {
  background-color: var(--balance1);
}
.actions-buttons-button .icon {
  margin-inline-end: var(--size1);
  filter: grayscale(1);
}

.ad-cta-button {
  display: inline;
  position: absolute;
}

/*entitiy*/
.e-dark-mode-button {
  position: fixed;
  z-index: 2;
  right: var(--size4);
  bottom: var(--size4);
}
@media (max-width: 700px) {
  .e-dark-mode-button {
    display: none;
  }
}

/* Dark mode colors */
.is-dark {
  --full-color: 0 0 0;
  --empty-color: 245 245 245;
  --text-color: #e5e5e5;
  --balance-full: #181818;
  --abalance1: rgba(var(--empty-color) / 0.05);
}
.is-dark .main-header {
  background-color: #252525;
}